If they are plugged in and charging, they can stay outside. Only discharged batteries are at risk of freezing, even up here in the GWN.
15 hours of juice and no load? No problem!john cotterman said:I have AGM with Iota/IQ4. My rig is parked in a carport where I also have an AC circuit for operating an external flood light as well as shop outlets. I turn that circuit (and the light) off when I go to bed and back on in the morning. The rig is plugged into that circuit, thus the battery is receiving AC juice approx 15 hours a day and off 9 hours a day. I could plug the rig into an AC circuit that is always on, but figured the time off is a good thing. Does it really matter with the Iota in the mix?
In a word, impressive.iowahiker said:After six full years (including six winters) and almost 1,000 camper nights, our original battery pair is going strong.